javascript 未捕获的错误：INVALID_STATE_ERR：DOM 异常 11
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Uncaught Error: INVALID_STATE_ERR: DOM Exception 11
提问by Anildhara
I am getting the below error.
我收到以下错误。
Uncaught Error: INVALID_STATE_ERR: DOM Exception 11
未捕获的错误：INVALID_STATE_ERR：DOM 异常 11
Here is the code where I am getting Error RUN TIME.
这是我收到错误运行时间的代码。
xhttp.setRequestHeader("Content-type","application/xhtml+xml");<br>
xhttp.open("POST",xmlFile,true);<br>
xhttp.send(postData);
I tried with falsein the third parameter of xhttp.open.
Can anyone tell me what's causing this?
我false在 xhttp.open 的第三个参数中尝试过。
谁能告诉我这是什么原因造成的？
回答by Anonymous
The error comes from the order of execution:
错误来自执行顺序：
xhttp.open("POST",xmlFile,true);
xhttp.setRequestHeader("Content-type","application/xhtml+xml");
xhttp.send(postData);
You must first open the connection and then set the request header otherwise you will get the error.
您必须首先打开连接，然后设置请求标头，否则您将收到错误消息。
回答by Ujjwal Singh
The XMLHttpRequest::Statusis unavailable till the XMLHttpRequest::readyStatehas changed to 4ie. a proper response has been acquired from the server and has now been populated in the Statusvariable.
该XMLHttpRequest::Status直到不可XMLHttpRequest::readyState更改为4IE浏览器。已从服务器获取正确响应并已填充到Status变量中。
Thus accessing the XMLHttpRequest::Status early can result in this error.
因此，提前访问 XMLHttpRequest::Status 可能会导致此错误。
Solution: first verify readyStateand only upon success — access Status
解决方案：首先验证readyState，只有在成功-访问Status
if (xmlhttp.readyState==4)
{
switch (xmlhttp.status)
{
case 200: // Do the Do
break;
case 404: // Error: 404 - Resource not found!
break;
default: // Error: Unknown!
}
}
